You'd think they might want a break from the cameras while escaping the glare of the paparazzi on holiday.
But posing in front of the lens is like having their morning coffee for Kendall and Kylie Jenner.
The sisters were seen taking snapshots of themselves for their family album during their Dominican Republic vacation.
Trigger happy: Kendall Jenner takes pictures of herself aboard the yacht on holiday in Dominican Republic
Mirror, mirror, on the wall. Who's the fairest of them all? Kendall snaps another picture - of herself
Of course the girls have been tweeting too from their luxury cruiser, with Kylie rather aptly writing '#blessed'.
Practice makes perfect: Kendall strikes a pose as a friend captures her on film
We're the queens of the world! Kylie emulates the famous pose from Titanic
She wrote: 'my @KhloeKardashian IS BACKKKKKK!!!!!!!!!!! POOL PARTY!'
Growing up fast: Kylie and a friend have a giggle as two other girls take pictures
Supermodel statistics: Even though Kendall is just 16, she has the figure of a runway star
The Teen Vogue cover girl added: 'loved spending the entire day with the fam'.
Rising star: Fans speculate that Kendall will end up as famous, if not more so, than half-sister Kim
Taking the plunge: Kylie jumps into the water, complete with rubber flippers
The group did their best dance and rap impression to Biggie Smalls track Hypnotize, before throwing Monopoly money in the air.
Babysitting duties: The girls were seen looking after little nephew Mason
A family that holidays together, stays together: The group seemed to genuinely enjoy each other's company as they socialised during activities, rather than just fake bonding for the reality show cameras
Kendall in particular has supermodel statistics, already incredibly tall and lean for her age, and still with room to grow.
Posers: Kendall can be seen in a unicorn T-shirt with Kylie in a neon orange bikini
Don't give up the day job: Father Bruce is on hand to take photographs
She told People: 'I’m not really thinking about college right now. If my career blows up and gets really big, [modelling] is what I would do.'
Music stars: The group shot a mock video to Biggie Smalls' 'Hypnotize and threw Monopoly money in the air
Natural beauties: The girls looked striking without make-up as they headed to dinner with mother Kris
Kylie opted for a more playful neon orange swimsuit, later stepping out in a yellow playsuit and purple sandals.
Dancing queen: Kylie threw some shapes with a male dance partner
Posers: The girls channelled their best magazine cover look as they smiled with locals in traditional dress